package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo2 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("image.png");
        FileOutputStream fos = new FileOutputStream("image_cp2.png");
        int len;
        byte[] buf = new byte[1024*10];
        long start = System.currentTimeMillis();
        while ((len = fis.read(buf))!=-1){
            fos.write(buf,0,len);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕！耗时："+(end-start)+"ms");
        fis.close();
        fos.close();
    }
}
